C9350-NM-4C – 4x100G/40G QSFP28 Module – C9350-24Y/48HX/48TX

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C9350-NM-4C Description

The C9350-NM-4C is a Cisco Catalyst 9350 Series Smart Switches network module for high-density 40G and 100G uplinks on the largest access switches. The module has four QSFP28 ports that run at 40G or 100G, for up to 400 Gbps of uplink bandwidth, and it is hot-swappable. The module installs only in C9350-48HX, C9350-48TX and C9350-24Y; the other C9350 models do not support it.

Quick Specs

Parameter

Specification

Product ID

C9350-NM-4C

Product type

Network module

Total ports

4

Supported port speeds

40G and 100G

Module slots

Four 40 GE/100 GE slots

Connector type

QSFP28

Supported switch models

C9350-48HX, C9350-48TX and C9350-24Y

Installation type

Field-replaceable network module

Media planning

Cisco-supported QSFP optics, DACs, AOCs, or breakout options where supported

Application Scenarios

Multigigabit Closet Uplinks

A C9350-48HX closet serving 10G multigigabit Wi-Fi access points and UPOE+ endpoints can send traffic to the aggregation layer over four 100G links from the module.

10G Copper Access Aggregation

A C9350-48TX that terminates 10G copper workstations or servers can use the module to build a 400 Gbps uplink bundle toward a collapsed core.

Product Comparison

Parameter

C9350-NM-4C

C9350-NM-2C

C9350-NM-8Y

Uplink ports

4 x 40G/100G

2 x 40G/100G

8 x 1G/10G/25G, or 4 x 50G with the lower row disabled

Connector type

QSFP28

QSFP28

SFP56

Maximum uplink bandwidth

400 Gbps

200 Gbps

200 Gbps

Supported media

QSFP optics, DACs, AOCs or breakout cables

QSFP optics, DACs, AOCs or breakout cables

SFP, SFP+, SFP28 and SFP56 optics, DACs or AOCs

Supported host switches

C9350-48HX, C9350-48TX, C9350-24Y

C9350-24P, C9350-48P, C9350-24T, C9350-48T, C9350-24U, C9350-48U, C9350-48TX, C9350-48HX

C9350-24P, C9350-48P, C9350-24T, C9350-48T, C9350-24U, C9350-48U, C9350-48TX, C9350-48HX

C9350-NM-4C differs from C9350-NM-2C in port count: four QSFP28 40G/100G ports for up to 400 Gbps against two ports and 200 Gbps. The four-port module installs only in C9350-48HX, C9350-48TX and C9350-24Y, so every other listed C9350 host, including C9350-24P, C9350-48P, C9350-24T, C9350-48T, C9350-24U and C9350-48U, is limited to C9350-NM-2C at 200 Gbps. Uplinks on SFP-family optics, with eight 1G/10G/25G ports or four 50G ports, call for C9350-NM-8Y instead, which also installs in the 24-port and 48-port hosts that C9350-NM-4C does not support.

Ordering Checklist

  • Catalyst 9350 hosts: Use the module only in C9350-48HX, C9350-48TX and C9350-24Y. It is not listed for C9350-24P, C9350-48P, C9350-24T, C9350-48T, C9350-24U or C9350-48U.
  • Module PID: Order C9350-NM-4C on a new switch order and C9350-NM-4C= as the spare. The = PID is the separate spare for replacing or adding a module on an installed switch.

Specifications

Parameter Specification Parameter Specification
Product ID C9350-NM-4C Product type Network module
Total ports 4 Supported port speeds 40G and 100G
Module slots Four 40 GE/100 GE slots Connector type QSFP28
Supported switch models C9350-48HX, C9350-48TX and C9350-24Y Installation type Field-replaceable network module
Media planning Cisco-supported QSFP optics, DACs, AOCs, or breakout options where supported

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Questions & Answers

  • Which Cisco IOS XE release is needed for C9350-NM-4C?

    C9350-NM-4C is one of the Phase 1 uplink modules for Cisco IOS XE 17.18.1, alongside C9350-NM-2C and C9350-NM-8Y. Run IOS XE 17.18.1 or later on the host switch before fitting the module. The module provides four 40G/100G QSFP28 ports for the uplink.
  • Does each of the four slots on C9350-NM-4C take one QSFP28 module?

    Yes. Per the Catalyst 9350 hardware installation guide, each of the four 40GE/100GE slots takes one QSFP28 module, and the module is hot-swappable. Fit it only in the supported hosts, since the 24-port and other 48-port C9350 models do not support it.
  • Which media can the four QSFP28 ports of C9350-NM-4C use?

    The four ports take Cisco-supported QSFP optics, direct-attach cables and active optical cables, or breakout options where supported. Each port runs at the 40G or 100G rate. Plan the media for each port before cabling the uplinks on the supported C9350 switch.
  • Can a failed C9350-NM-4C be replaced in the field?

    Yes. C9350-NM-4C is a field-replaceable network module with four 40 GE/100 GE slots, so a failed unit is exchanged on site. A replacement or additional module is ordered as the spare PID C9350-NM-4C=. Fit the replacement only in a supported host switch.

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  • C9350-NM-4C Datasheet